<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<form action="">
    <input type="text" name="username" placeholder="用户名">
    <input type="password" name="password" placeholder="密码">
    <input type="button" value="登录" @click="login()">
</form>
<script src="js/vue.min.js"></script>
<script src="js/axios.min.js"></script>
<script>
    let v = new Vue({
        el: "form",
        methods: {
            login() {
                //得到form表单中的数据
                let data = new FormData(document.querySelector("form"));
                //发出登录的异步请求
                axios.post("/login",data).then(function (response){
                    if(response.data==1){
                        alert("登录成功");
                    location.href="/";
                    }else if(response.data==2){
                        alert("密码错误");
                    }else{
                        alert("用户名不存在");
                    }

                })
            }
        }

    })

</script>

</body>
</html>